Are there any resources I could use to learn how to manipulate the spectrogram output of world ?

[SeleDreams]

Hi, I'm sorry to bother you. I am working on programming a software based on world and I would like to modify the output spectrogram analyzed by world before synthesizing it, however I am not sure about the best way to go about it are there resources that could help to learn ?

[mmorise]

It is difficult to comment because your purpose is unclear. Since there are different approaches, I recommend you investigate the paper on voice conversion research.